Girtyoceras primum
Girtyoceras shorrocksi
Girtyoceras glabrum
Girtyoceras premeslerianum
Girtyoceras waitei
Girtyoceras cowdalense
Girtyoceras hamiltonense
Girtyoceras discus
Girtyoceras latum
Girtyoceras acutum
Girtyoceras simplex
Girtyoceras gordoni
Girtyoceras multicameratum
Girtyoceras deani
Girtyoceras modestum
Girtyoceras meslerianum
Girtyoceras meslerorum
Girtyoceras brueningianum
Girtyoceras endicottense
Girtyoceras kazakhorum
Girtyoceras postmeslerianum
Girtyoceras welleri
Girtyoceras intracostatum